Creating Basic RSS Reader in ASP.NET MVC 3
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Join For FreeRSS (originally RDF Site Summary, often dubbed Really Simple Syndication) is a family of web feed formats used to publish frequently updated works—such as blog entries, news headlines, audio, and video—in a standardized format.[2] An RSS document (which is called a "feed", "web feed",[3] or "channel") includes full or summarized text, plus metadata such as publishing dates and authorship.
You can find more information about RSS from the following links.
http://en.wikipedia.org/wiki/RSS
Now let’s start writing code creating a Basic RSS Reader. So first We need two things to create RSS Reader. A RSS Entity class which hold properties for RSS and Another method which populate IEnumerable of particular RSS Class. We are creating this example with ASP.NET So I have create One Model class called RSS Like following.
using System.Collections.Generic; using System.Linq; using System.Xml.Linq; using System.Text.RegularExpressions; namespace CodeSimplified.Models { public class Rss { public string Link { get; set; } public string Title { get; set; } public string Description { get; set; } } }
Now our entity class is ready. Now we need a class and a method which will return IEnumerable of RSS Class. So I have created a Static Class RSS Reader which has “GetRSSFeed” Method which return RSS Feeds like following.
using System.Collections.Generic; using System.Linq; using System.Xml.Linq; using System.Text.RegularExpressions; namespace CodeSimplified.Models { public class RssReader { private static string _blogURL = "http://feeds.feedburner.com/blogspot/DotNetJalps"; public static IEnumerable<Rss> GetRssFeed() { XDocument feedXml = XDocument.Load(_blogURL); var feeds = from feed in feedXml.Descendants("item") select new Rss { Title = feed.Element("title").Value, Link = feed.Element("link").Value, Description = Regex.Match(feed.Element("description").Value, @"^.{1,180}\b(?<!\s)").Value }; return feeds; } } }
As you can see in above code. I am loading RSS feed with XDcoument Class with my Blog RSS feed URL and Then I am populating RSS Class Enumerable with the help of the Linq-To-XML. Now We are ready with Our Model classes so Now it’s time to Add ActionResult in Home Controller. So I have added Action Result which return View with RSS IEnumerable like following.
public ActionResult RssReader() { return View(CodeSimplified.Models.RssReader.GetRssFeed()); }
Now everything is ready. So its time to create a view. So I have created strongly typed view for RSS Model class like following.
@model IEnumerable<CodeSimplified.Models.Rss> @{ ViewBag.Title = "RssReader"; } <h2>RssReader</h2> <p> @Html.ActionLink("Create New", "Create") </p> <table> <tr> <th> Title </th> <th> Description </th> <th> Link </th> </tr> @foreach (var item in Model) { <tr> <td> <a href="@item.Link" target="_blank">@Html.Encode(item.Title)</a> </td> <td> @System.Web.HttpUtility.HtmlDecode(item.Description) </td> <td> <a href="@item.Link" target="_blank">More</a> </td> </tr> } </table>
Let's run application via pressing F5 and Following is the output as expected.
So that’s it. Isn’t that cool? With the few lines of code we have created a Basic RSS Reader. Hope you like it. Stay tuned for more.. Till then Happy Programming..
Published at DZone with permission of Jalpesh Vadgama, DZone MVB. See the original article here.
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